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Kintetsu - Object Oriented Databases vs Relational Databases

Object Oriented Database vs Relational Database

Kintetsu
(Transportation, Logistics)

Kintetsu, a $2B company in Japan, models the Japanese railway system using an ODBMS.

Each train is an object, as are platforms, switches, tracks, traffic, etc. The system allows dynamic modeling of changes due to rush hour, holidays, extra load on the electrical supply grid, etc. It's been in production for several years. The developers have reported in published papers that it was developed in only 6 months, a fraction of the time that would have been needed to decompose all the objects into tables. They're now reusing some of their objects for a trucking system.


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